| Post 15 made on Tuesday October 6, 2009 at 09:53 |
estech Active Member |
Joined:
Posts: | August 2002
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This may be extreme, but if the amplifier powering the speakers has a common ground at the outputs, that could free up one conductor, paired with the shield, to give you a signal path for keypads. You would still need local power at each keypad.
Alternatively, I've used ATON volume controlled switches, centrally located, with handheld controllers, with very good results.
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Pay no attention to that man behind the curtain. |
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